Type 'easy' or 'hard' to begin the quiz. Easy is a 15-degree grid, hard is a 10-degree grid. Then, try to name the LARGEST city in each grid square which fits the category label for each square. To name a city, you must first click on the grid square to make it have a GREEN border. Then, type in the city answer for that square followed by a '.' (a period). You are given a score from 0 to 100 based on your answer's population compared to the largest city accepted in that square (100 being you named the largest city).
LETTER: means the city starts with that letter.
NUMBER RANGE: (such as 2-5, 10+) means the city contains that many letters (excluding spaces and special characters).
POPULATION RANGE: (such as 50-100K) means the city has that range for its population.
2+ WORDS means the city name has 2 or more words (words denoted by a space or hyphen).
At the end of the quiz the largest population missed answer will show in each unanswered square, and for those answered the largest city will be listed if you didn't answer it.
Quiz Takers 
Sorry, but this is a ridiculously poor quiz.
New Orleans didn’t average below 0 ft?
According to the source no, and it’s not an average it’s the elevation at the coordinate I use for my city quizzes.
this is about as easy as guiding a drunk rhinoceros, this seems arbitrarily weird maybe i don’t understand this
Why are cities like tokyo, new york, london etc. not accepted? They are definitely among the largest cities?
They are but not among the largest in their elevation ranges – remember on my site populations are city proper not whole metro area.
i can’t figure this game out
also there isn’t enough time
Tokyo is the largest city in the world! how is it not the largest in its elevation range???
Not by city proper population. My quizzes use city proper, per the figures on citypopulation.de.